{"id":312657,"date":"2023-10-21T11:06:00","date_gmt":"2023-10-21T11:06:00","guid":{"rendered":"\/forum\/forums\/topic\/error-and-divergence-in-fluent-with-increasing-number-of-cores\/"},"modified":"2023-10-21T11:06:00","modified_gmt":"2023-10-21T11:06:00","slug":"error-and-divergence-in-fluent-with-increasing-number-of-cores","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/error-and-divergence-in-fluent-with-increasing-number-of-cores\/","title":{"rendered":"Error and Divergence in Fluent with increasing number of cores"},"content":{"rendered":"

Hi everyone,<\/p>\n

I use the device with the following specifications for simulation in Fluent:<\/span><\/span><\/span><\/p>\n

(FLUENT 2022-R1, Windows OS, Intel i9-13900k, 32GB RAM). My processor has 24 physical cores.<\/span><\/span>
<\/span><\/p>\n

First, I opened the mesh file with 22 cores<\/span> in Fluent and tried to solve that the residuals do not converge well and errors appear in the console:<\/span><\/span><\/span><\/p>\n

\"\"<\/span><\/span><\/span><\/p>\n

 <\/p>\n

Once again, I opened the mesh file with 16 cores<\/span> in Fluent and tried to solve that, compared to the previous state, the resiguals converge better, but still messages appear in the console:<\/span><\/span><\/span><\/p>\n

\"\"<\/span><\/span><\/span><\/p>\n

 <\/p>\n

And for the third time, I opened the mesh file with 4 cores<\/span> in Fluent and tried to solve that no message appeared in the console this time:<\/span><\/span><\/span><\/p>\n

\"\"<\/span><\/span><\/span><\/p>\n

 <\/p>\n

It’s very strange and very disappointing. Does that mean I can’t use the number of cores of my device for simulation?<\/span><\/span><\/span><\/p>\n

Why do very strange things happen in the convergence process with the increase in the number of cores?<\/span><\/span><\/span><\/p>\n

The number of my mesh is very large and using 4 cores is very boring and unbearable.<\/span><\/span><\/span><\/p>\n

Please help me what to do?<\/span><\/span><\/span><\/p>\n

Thankyou<\/span><\/span><\/span><\/p>\n

Regards<\/span><\/span><\/span><\/p>\n

I should also say that when I open the mesh in Fluent, at the very first moment, a message with the following theme appears in the console:<\/span><\/span><\/span><\/p>\n

\"\"<\/span><\/span><\/span><\/p>\n

 <\/p>\n

Is this normal?<\/span><\/span><\/span><\/p>\n

I hope to solve my problem.<\/span><\/span><\/span><\/p>\n

Regards<\/span><\/span><\/span><\/p>\n","protected":false},"template":"","class_list":["post-312657","topic","type-topic","status-closed","hentry"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_subscription":["17026","13659","199"],"_bbp_author_ip":["96.7.218.215"]," _bbp_last_reply_id":["0"]," _bbp_likes_count":["0"],"_btv_view_count":["1432"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["312657"],"_bbp_forum_id":["27792"],"_bbp_engagement":["199","13659","17026"],"_bbp_voice_count":["3"],"_bbp_reply_count":["11"],"_bbp_last_reply_id":["313522"],"_bbp_last_active_id":["313522"],"_bbp_last_active_time":["2023-10-26 14:40:02"]},"test":"a-karimi8457gmail-com"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/312657","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics"}],"about":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/types\/topic"}],"version-history":[{"count":0,"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/312657\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=312657"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}